Maribor Island is a natural island on the Drava river and a botanical natural monument. It is the habitat of various small animal species, especially birds. Access to the island is possible along the bank of the Drava past Koblar Bay to the bridge to the island.
In 1946, when the nearby hydroelectric power station Mariborski Otok was built, a part of the island was removed. A concrete pier was made on the west side to prevent further erosion in case of high water.